Publications by authors named "Ganzer R"

Purpose: To investigate the role of transrectal MRI fusion biopsy to select patients for prostate cancer focal therapy.

Methods: Patients with suspected prostate cancer underwent transrectal MRI fusion biopsy with the Koelis trinity device. Two focal therapy eligibility criteria were subsequently defined: Group 1: PSA ≤ 15 ng/ml, unilateral csPCa, ISUP grade ≤ 2, no contralateral PIRADS 3-5 lesion; Group 2: same criteria but ISUP grade 3.

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Background: Focal therapy (FT) is an option to treat localized prostate cancer (PCa) and preserve healthy prostate tissue in order to reduce known side effects from primary whole-gland treatment. The available FT modalities are manifold. Until now, national and international PCa guidelines have been cautious to propose recommendations regarding FT treatment since data from prospective controlled trials are lacking for most FT modalities.

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Objectives: Focal therapy with high-intensity focused ultrasound (HIFU) is an emerging option for the treatment of prostate cancer and often followed up by MRI. Image assessment of treatment failure, however, requires proper knowledge about typical procedure-related changes in prostate MRI, which is sparse, in particular for unilateral HIFU treatment and late follow up (beyond 6 months). The goal of this study was therefore to compile the type and frequency of such MRI findings in selected patients without recurrent cancer 12 months after prostate hemiablation.

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Background: Focal therapy (FT) with its favorable side-effect profile represents an option between active surveillance and traditional whole-gland treatment in localized prostate cancer (PCa). Consensus statements recommend eligibility criteria based on magnetic resonance imaging (MRI)-targeted and systematic combination biopsy.

Objective: To estimate the future potential of FT by analyzing the number of men eligible for FT among all men with biopsy-proven PCa and to judge the potential of different energy sources.

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Background: Owing to the morbidity of established radical treatment options for prostate cancer, alternative whole-gland and focal treatment strategies have emerged. High-intensity focused ultrasound (HIFU) is one of the most studied sources for tissue ablation and has been used since the 1990s.

Objective: To provide 21-yr oncological long-term follow-up data of an unselected series of patients who underwent whole-gland HIFU for nonmetastatic prostate cancer.

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In multivariate analysis, GS of the regular prostatectomy specimen was the only statistically significant parameter for pT2R1 prostate cancer.

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The use of multiparametric magnetic resonance imaging (mpMRI) is becoming increasingly more important for the primary diagnostics of prostate cancer (PCa) and for monitoring under active surveillance. Current studies confirmed that the use of mpMRI can increase the detection of clinically significant PCa and reduce the detection rate of insignificant PCa as well as the rate of unnecessary biopsies. The information from mpMRI can be cognitively used for in-bore biopsy and using fusion biopsy systems.

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Background: Symptomatic lymphocele following radical prostatectomy (RP) and concomitant bilateral extended pelvic lymph node dissection (ePLND) has a significant impact on postoperative recovery and may sometimes require surgical intervention.

Objective: To report on the use of four-point peritoneal flap fixation (4PPFF) during RP to reduce lymphocele occurrence following PLND.

Design, Setting, And Participants: Between April 2010 and May 2017, 1358 patients underwent RP with concomitant bilateral ePLND.

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Introduction: Focal therapy (FT) is a treatment option for prostate cancer (PCa), which offers the possibility of an effective therapy in selected patients who have the localized disease, with a significant reduction in treatment related morbidity. Based on the current status of FT, our objective was to determine the most appropriate strategy to improve patient management.

Materials And Methods: A literature review was done performed through the PubMed database and focused on the following topics: localised prostate cancer,MRI, prostate biopsies, ablative therapy and focal therapy.

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Purpose: To compare the oncological long-term efficacy of whole gland high-intensity focused ultrasound (HIFU) therapy and radical prostatectomy (RP) in patients with clinically localized prostate cancer.

Methods: 418 patients after open RP (1997-2004) were compared with 469 patients after whole gland HIFU (1997-2009) without preselection. Oncological follow-up focused on biochemical relapse, salvage treatment, life status and cause-specific mortality.

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Background: The aim of the study was to identify the rate of pathologic upgrading and upstaging in a cohort of patients diagnosed with prostate cancer (PCa) who met inclusion criteria for active surveillance (AS) by the European Association of Urology (EAU) guidelines on prostate cancer but decided to undergo radical prostatectomy (RPE). Our goal was to determine possible predictive parameters that may be associated with unfavorable disease.

Methods: Single center retrospective analysis of patients who underwent RPE despite qualifying for AS according to the EAU AS criteria (defined as PSA≤10 ng/mL, biopsy Gleason Score <7, clinical stage ≤T2a, ≤2 positive biopsy cores and ≤50% cancer involvement of every positive core).

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Background: With growing interest in focal therapy (FT) of prostate cancer (PCa) there is an increasing armamentarium of treatment modalities including high-intensity focused ultrasound (HIFU), cryotherapy, focal laser ablation (FLA), irreversible electroporation (IRE), vascular targeted photodynamic therapy (VTP), focal brachytherapy (FBT) and stereotactic ablative radiotherapy (SABR). Currently there are no clear recommendations as to which of these technologies are appropriate for individual patient characteristics. Our intention was to review the literature for special aspects of the different technologies that might be of advantage depending on individual patient and tumour characteristics.

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Interstitial cells (ICs) are thought to play a functional role in urinary bladder. Animal models are commonly used to elucidate bladder physiology and pathophysiology. However, inter-species comparative studies on ICs are rare.

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Objectives: To systematically review studies comparing extraperitoneal (E-RP) and transperitoneal minimally invasive radical prostatectomy (T-RP).

Methods: The systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines in September 2015. Several databases were searched including Medline and Scopus.

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Article Synopsis
  • * Scientists are exploring new ways to detect prostate cancer using special markers called metabolite biomarkers, which are substances found in urine and blood.
  • * One promising method is called nuclear magnetic resonance (NMR), which helps measure these markers accurately and could be a cheap way to diagnose prostate cancer early and track treatment progress.
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Purpose: We evaluated focal therapy with high intensity focused ultrasound hemiablation in a prospective trial.

Materials And Methods: We performed a prospective, multicenter, single arm study in patients with unilateral low/intermediate risk prostate cancer who were treated from April 2013 through March 2016 in Germany in AUO (Arbeitsgemeinschaft Urologische Onkologie) Study Protocol AP 68/11. Unilateral prostate cancer was assessed by transrectal ultrasound guided biopsy and multiparametric magnetic resonance imaging.

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The target of focal therapy (FT) in prostate cancer (PC) is partial treatment of the prostate aiming at preserving surrounding anatomical structures. The intention is to minimize typical side effects of radical treatment options combined with local tumor control. Numerous established and new technologies are used.

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Background: Based on ontogenetic-anatomic considerations, we have introduced total mesometrial resection (TMMR) and laterally extended endopelvic resection (LEER) as surgical treatments for patients with cancer of the uterine cervix FIGO stages I B1 - IV A. For a subset of patients with locally advanced disease we have sought to develop an operative strategy characterized by the resection of additional tissue at risk for tumor infiltration as compared to TMMR, but less than in LEER, preserving the urinary bladder function.

Methods: We conducted a prospective single center study to evaluate the feasibility of extended mesometrial resection (EMMR) and therapeutic lymph node dissection as a surgical treatment approach for patients with cervical cancer fixed to the urinary bladder and/or its mesenteries as determined by intraoperative evaluation.

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Previously, we described prostate cancer (PCa) detection (83% sensitivity; 67% specificity) in seminal plasma by CE-MS/MS. Moreover, advanced disease was distinguished from organ-confined tumors with 80% sensitivity and 82% specificity. The discovered biomarkers were naturally occurring fragments of larger seminal proteins, predominantly semenogelin 1 and 2, representing endpoints of the ejaculate liquefaction.

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Background: High intensity focused ultrasound (HIFU) has been used since the beginning of the 1990s as an alternative treatment for prostate cancer.

Objective: Overview of the current status and critical review of the different indications for HIFU in the treatment of prostate cancer.

Material And Methods: Review of the current literature on the indications, side effects, oncologic results and current guideline recommendations.

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Background: Acute focal bacterial nephritis (AFBN) is a rare disease currently described only in case reports and small case series. In this study we summarize the clinical features of AFBN as has been documented in the literature and draw recommendations on the proper diagnosis and therapy.

Methods: A systematic literature review was undertaken in PUBMED, Web of Science and The Cochrane Library online databases for relevant literature on AFBN in adults.

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This work aims to assess the impact of an additional endorectal coil on image quality and cancer detection rate within the same patients. At a single academic medical center, this transversal study included 41 men who underwent T2- and diffusion-weighted imaging at 3 T using surface coils only or in combination with an endorectal coil in the same session. Two blinded readers (A and B) randomly evaluated all image data in separate sessions.

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Objective: To report the oncological outcome of salvage high-intensity focused ultrasound (S-HIFU) for locally recurrent prostate cancer after external beam radiotherapy (EBRT) from a multicentre database.

Patients And Methods: This retrospective study comprises patients from nine centres with local recurrent disease after EBRT treated with S-HIFU from 1995 to 2009. The biochemical failure-free survival (bFFS) rate was based on the 'Phoenix' definition (PSA nadir + 2 ng/mL).

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